Expansion Module Cable Adapter. Extends Audio Input to Reach Headset Jack on Phone. Compatible with the following headsets: CS50, CS55, CS70, CS70N, CS351N, CS361N, CS510, CS520, CS530, CS540
Plantronics Cable Assembly, Modular
Expansion Module Cable Adapter. Extends Audio Input to Reach Headset Jack on Phone
Compatible with the following headsets:
 •CS50
 •CS55
 •CS70
 •CS70N
 •CS351N
 •CS361N
 •CS510
 •CS520
 •CS530
 •CS540